Answer:
Step-by-step explanation:
Ok
x=18√2 or x=−18√2
Step 1: Simplify both sides of the equation.
9/8x^2=729
Step 2: Divide both sides by 9/8.
9/8x^2/9/8=729/9/8
x^2=648
Step 3: Take square root.
x=±√648
D=rt 120=40mph*3hours
